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当我尝试对扩展 StoredProcedure 的以下类进行单元测试时，我在以下行收到 NullPointerException：return (Map) execute(csc, new CallableStatementCallback()in JDBCTemplateclass。execute我嘲笑了在方法中传递的 bean DataSource，以及 sql。

public class MyStoredProc extends StoredProcedure {
    /**
     * Constructor - sets SQLParameters for the stored procedure.
     * 
     * @param ds - DataSource
     */
    public MyStoredProc(DataSource dataSource, String sql) {
        super(dataSource, sql);
        declareParameter(new SqlOutParameter("return",Types.NUMERIC));
        declareParameter(new SqlParameter("BATCH_ID",Types.NUMERIC));
        declareParameter(new SqlParameter("PROCESS_TYPE",Types.VARCHAR));

        complie(); 
    }

    public BigDecimal execute(MyBean bean){
        BigDecimal returnValue = BigDecimal.valueOf(-1);

        Map in = new HashMap();

        in.put("BATCH_ID", bean.getBatchID());
        in.put("PROCESS_TYPE", bean.getProcessType());

        Object obj = execute(in);
        if (obj != null) {
            Object output = ((HashMap) obj).get("return"); 

            if( output instanceof BigDecimal) {
                returnValue = (BigDecimal)output;
            }
        }
        return bigDec; 
    }
}

测试用例：PS - 当我调试这个测试用例时，根本没有使用 StoredProcedure 模拟。而是使用了实际的实现。

public class MyStoredProcTest {
private MyStoredProc mysp;
private DataSource dataSource;
private String sql;
@Before
public void setUp() {
    dataSource = EasyMock.createMock(DataSource.class);
    sql = "Testing";
    mysp = new MyStoredProc(dataSource, sql);
}

@Test
public void testExecute() {

    StoredProcedure storedProcedure = EasyMock
            .createMock(StoredProcedure.class);
    HashMap map = new HashMap();
    map.put("return", BigDecimal.ONE);
    expect(storedProcedure.execute(EasyMock.anyObject(Map.class))).andReturn(map);

    Connection con = EasyMock.createMock(Connection.class);
    expect(dataSource.getConnection()).andReturn(con);   
    MyBean bean = EasyMock.createMock(MyBean.class);


    expect(bean.getBatchID()).andReturn(BigDecimal.valueOf(.0001))
            .anyTimes();
    expect(bean.getProcessType()).andReturn("Process Type").anyTimes();

    replay(bean, dataSource, storedProcedure, con);
    BigDecimal returnValue = null;
    try {
        returnValue = mysp.execute(bean);
    } catch (Exception e) {
        System.out.println("exception" + e.getStackTrace());//  the Null pointer from JDBCTemplate is caught here.
    }
    Assert.assertEquals(BigDecimal.valueOf(-1), returnValue);
}
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1 回答 1

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你的一些模拟没有被使用，因为你没有重播它们。你应该修改replay(bean)为replay(bean, datasource, storedProcedure)

另一方面，map不需要嘲笑。当您期望调用时，storedProcedure.execute(...)您可以返回预先填充的map.

于 2013-04-05T15:48:22.987 回答